将字符串转换为私钥和公钥 (RSA)

Question

作为私钥和公钥的两个字符串是：

    static String Public =          
       "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDH+wPrKYG1KVlzQUVtBghR8n9d" + "/n" +
     "zcShSZo0+3KgyVdOea7Ei7vQ1U4wRn1zlI5rSqHDzFitblmqnB2anzVvdQxLQ3Uq" + "/n" +
    "EBKBfMihnLgCSW8Xf7MCH+DSGHNvBg2xSNhcfEmnbLPLnbuz4ySn1UB0lH2eqxy5" + "/n"+
     "0zstxhTY0binD9Y+rwIDAQAB"+ "/n";
    static String Private = 
        "MIICxjBABgkqhkiG9w0BBQ0wMzAbBgkqhkiG9w0BBQwwDgQIr5NQ/LYPG/UCAggA" +"/n"+
      "MBQGCCqGSIb3DQMHBAiLh89iGSkmoASCAoBCpAo9/IzDE3yGhvWr9RgozE7revOo" +"/n"+
          "V2OXmU+d0+WYAAx2GYVaUCbFVrmgiVmrbiTgLUMXAGIpvxQ2rzyIvRHW/RN3Gcky" +"/n"+
        "qR/AwBatzixqrnoS4aD1/Ovjr4hwde4XHYbPEilZZuVAJFiznhy73qm/So4XghSY........." ;

我已经阅读了其他问题并尝试了他们的解决方案但没有任何效果....我有一个公钥和私钥都是字符串..我需要将它们转换为'Key'但我不断收到java.security.spec.InvalidKeySpecException： java.security.InvalidKeyException ...

      public static Key loadPublicKey(String stored) throws GeneralSecurityException, IOException 
       {
      byte[] data = Base64.getDecoder().decode((stored.getBytes()));
      X509EncodedKeySpec spec = new X509EncodedKeySpec(data);
      KeyFactory fact = KeyFactory.getInstance("RSA");
      return fact.generatePublic(spec);

        }


public static Key loadPrivateKey(String key64) throws     GeneralSecurityException, IOException {
        byte[] clear = Base64.getDecoder().decode(key64.getBytes());
        PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(clear);
        KeyFactory fact = KeyFactory.getInstance("RSA");
        PrivateKey priv = fact.generatePrivate(keySpec);
        Arrays.fill(clear, (byte) 0);
        return priv;

   }

Answer 1

删除字符串声明中的Feeds行。 这不是关键的一部分：

static String Public =          
       "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDH+wPrKYG1KVlzQUVtBghR8n9d" +
     "zcShSZo0+3KgyVdOea7Ei7vQ1U4wRn1zlI5rSqHDzFitblmqnB2anzVvdQxLQ3Uq" + 
    "EBKBfMihnLgCSW8Xf7MCH+DSGHNvBg2xSNhcfEmnbLPLnbuz4ySn1UB0lH2eqxy5" +
     "0zstxhTY0binD9Y+rwIDAQAB";
static String Private = 
        "MIICxjBABgkqhkiG9w0BBQ0wMzAbBgkqhkiG9w0BBQwwDgQIr5NQ/LYPG/UCAggA" +
      "MBQGCCqGSIb3DQMHBAiLh89iGSkmoASCAoBCpAo9/IzDE3yGhvWr9RgozE7revOo" +
          "V2OXmU+d0+WYAAx2GYVaUCbFVrmgiVmrbiTgLUMXAGIpvxQ2rzyIvRHW/RN3Gcky" +
        "qR/AwBatzixqrnoS4aD1/Ovjr4hwde4XHYbPEilZZuVAJFiznhy73qm/So4XghSY........." ;

我用以下代码尝试了它：

  public static void main(String[] args) throws GeneralSecurityException, IOException {
      System.out.println(loadPublicKey(Public));

  }

  public static Key loadPublicKey(String stored) throws GeneralSecurityException, IOException 
  {
 byte[] data = Base64.getDecoder().decode((stored.getBytes()));
 X509EncodedKeySpec spec = new X509EncodedKeySpec(data);
 KeyFactory fact = KeyFactory.getInstance("RSA");
 return fact.generatePublic(spec);

   }

输出是：

Sun RSA public key, 1024 bits
  modulus: 140431102839105138202102866401190456107365606715815288536913018579006717438700259314092212104831553250527764925385527697411165705192297577022746989837839401358787285684108054389360182109284048524426941021357601686464156659759470495649944686235380003772357268264646549523784880655065600797504478771675703688879
  public exponent: 65537

Answer 2

//Function is in scala and need input parameter as string to be decrypted

def RsaDecryption(inParm: String): String = {
      val decoded_string = inParm.getBytes()
      val strBytes = getDecoder.decode(decoded_string)
      //println("String in Bytes "+strBytes)
      val DecryptKey  = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAl3XbajBtSXXJ45h4OYxN6Acqry6+032MmMvB7R4vZ5t/sIEo7IAblOY/JGrHpikVWvmSw+vVyYlQ6W8EVi60/QvZXdqBf+Sbmu6JusuKX8ObkpDr4DXcJCvW1k6TGzuYN9X2WTIknRL8z/OabFAf79ybBFwDWq/vhoagMMDz03FCt0sydo83m878WW4pqVYzRW0OHug3dHhePuL21+oOIFK5+H3FMLT1mPV9FDVu33RtopsoKkkPJ8/MtowgRi+Uk8WHXEcf+NGQh3wee8Tz8LT2UuiCeq997PjfP8LipRyZ9wS0FsZb33Wgbcgns6MTBQPfsPz1b97x46IN7zsJeQIDAQAB"
      val DecBytes = Base64.getDecoder().decode(DecryptKey)
      val DecSpec = new X509EncodedKeySpec(DecBytes)
      val keyFactory = KeyFactory.getInstance("RSA")
      val DecKey = keyFactory.generatePublic(DecSpec)
      val decryptionCipher2 = Cipher.getInstance("RSA")
      decryptionCipher2.init(Cipher.DECRYPT_MODE, DecKey)
      val decryptedMessage = decryptionCipher2.doFinal(strBytes)
      val decmsg = new String(decryptedMessage)
      //println(DecKey)
      //println("Public key string "+getEncoder.encodeToString(DecKey.getEncoded()))
      return decmsg
    }